CAS: 2411-89-4 Molecular Formula: C32H32N2O12 Molecular Weight (g/mol): 636.61 MDL Number: MFCD00005911 InChI Key: IYZPEGVSBUNMBE-UHFFFAOYSA-N Synonym: o-cresolphthalein complexone,phthalein purple,cresolphthalexon,o-cresolphthalexon,phthalein complexon,o-cresolphthalein complexon,cresolphthalein complexon,metal phthalein,cresolphthalein complexone,unii-a4p6737i7f PubChem CID: 75485 IUPAC Name: 2-[[5-[1-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-5-methylphenyl]-3-oxo-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl]methyl-(carboxymethyl)amino]acetic acid SMILES: CC1=CC(=CC(CN(CC(O)=O)CC(O)=O)=C1O)C1(OC(=O)C2=CC=CC=C12)C1=CC(C)=C(O)C(CN(CC(O)=O)CC(O)=O)=C1